Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The radii of the elements from chromium 
to copper 
are very close to
one another. This is due to
A
lanthanide contraction
B
the fact that successive addition of 
-electrons screen the outer electrons (4s) from the inward pull of the nucleus
-electrons screen the outer electrons (4s) from the inward pull of the nucleus C
increase in radii due to increase in 
is compensated by decrease in radii due to increase in 
is compensated by decrease in radii due to increase in D
atomic radii do not remain constant but decrease in a normal gradation.
Text Solution
Verified by ExpertsThe correct answer is:
B
The radii of the elements from chromium 
to copper 
are very close to one another. This is due to the fact that successive addition of 
-electrons screen the outer electrons ( 
) from the inward pull of the nucleus.
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